XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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2026-05-28	11:30am			Max		Min
Weather		----
Temperature		17.7 °C		17.8 °C	11:21am	11.7 °C	4:12am
Relative Humidity		61 %		76 %	4:20am	58 %	11:25am
Dew Point		10.1 °C		10.0 °C	9:55am	7.2 °C	12:10am
Wind Velocity		28 ° at  3.1 G 8.7 kt		13.0 kt	8:27am
Pressure		30.097 "  →		30.099 "	10:46am	29.953 "	12:08am
Rainfall Rate		0.0 mm/h		0.0 mm/h	----m
Snow On Ground		0 cm
Brightness / Darkness		882 W/m² /  0.00 m/"²		882 W/m²	11:29am	20.07 m/"²	3:55am
Remarks

Rainfall	Today	0.0 mm	Storm Total	0.0 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-1.09 mm

Lake Conditions

Water Temperature  --- °C

Waves  ---

ICE FREE

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Meteor Index	5   Random
Aurora Index / Solar	24   Unsettled   - 6 nT	Solar Flux   142  sfu  /   S 0    G 0    R 0   /  MUF   25.7 MHz

Sunrise	5:44am	Sunset	8:49pm
Moonrise	N/A	Moonset	N/A	Moon Phase	Waxing Gibbous

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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